body {
  background: #cecdfc;
  margin: 0;
}
#yj {
  margin-top: 57px;
  margin-bottom: 10px;
}
#yj1 img {
  width: 100%;
  height: 500px;
}
#yj2 img {
  width: 100%;
  height: 200px;
}
.list-group img {
  width: 100%;
  height: 400px;
  margin-top: 50px;
}
#yj2 {
  background: white;
  text-align: center;
  height: 500px;
}
#yqnr {
  background: #f1fafa;
  margin-bottom: 10px;
}
#y1 {
  width: 100%;
  height: 400px;
  margin-top: 50px;
}
#picture2 img {
  width: 80%;
  height: 250px;
}
#picture4 img {
  width: 80%;
  height: 120px;
}
.tu img {
  width: 90%;
  height: 200px;
}
#foot {
  text-align: center;
}
